Vacuum cleaner



F. RIEBEL, JR

May 2, 1933.

VACUUM CLEANER Filed Oct. 9, 1929 free/Wick Ezeei J1;

A TTORNEYS.

Patented May 2, 1933 UNITE) TES PATNT FREDERICK RIEBEL, JR., OF TQLEDO, 01510, ASSIGNOR TO AIR HAY ELECTRIC- APFLIAH'CE CGPJPOBATIOELOF TOLEDO, 05510, A COP-EORA'EIGN OF OHIO vacuum crnennr.

Application filed October 9, 1925. Serial No. 398,392.

The present invention, as indicated, relates to vacuum cleaners; and among its objects, broadly stated, is the provision of certain improvements in the dust collecting and air filtering units which are used in connection with such cleaners. Other objects and advantages will appearas the description proceeds;

To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims; the annexed drawing and the following dc scription setting forth in detail certain means of carrying out the invention, such disclosed means illustrating, however, but one of various ways in which the principle of the invention may be used.

In said annexed drawing Fig. 1 is a side elevational view of an air 0 filtering and dust collecting unit embodying the principles of my invention; Figs. 2 and 3 are fragmentary plan views of details; Fig. 4 is a fragmentary side View of a detail; Fig. 5 is a view of the dust collecting unit in unfolded form; Fig. 6 is a fragmentary end view of a detail; Fig. 7 is a fragmentary end view of the dust collecting unit shown in conjunction with the handle of the cleaner. Fig. 8 is an enlarged sectional view of Fig. 1

. taken substantiallyon line 88.

Referring to the drawing, and more especially to Figs. 1 and 5, the air filtering and dust collecting unit here shown is composed of an outer bag 1 and an inner bag 2, said outer bag 1 being preferably formed of cloth or lilre material, and said inner bag 2 being formed of porous paper. The outer bag 1 has associated therewith a tube 3 having a deflector a extending inwardly of said outer bag 1. The tube 3 is adapted to be connected to the suction tube of a cleaner (not shown). The inner paper bag 2 has a neck 5 formed therewith,-adapted to engage the inner portion of said tube 3, and is secured thereto by suitable resilient means.

hen in the position illustrated in Fig. 5, the outer bag comprises a fiat envelope having what may be termed outer and inner walls, (from the positions they assume when the assembly is folded as in Fig. 5) the two being secured together a t'their peripheries to form i a container or envelope which is completely enclosed except for the tube 3 and the mouth which is formed between the split edges or severed halves of the inner wall. One of these halves overlaps the split edge-'7 of the other. half to form a flap 9, to close the mouth. The mouth allows insertion and removal of the paper liner 2, which is shown in dotted lines in Fi 5, lying'fiatly within the outer 6 bag 1, between the outer and inner walls thereof.

The flat assembly shownin Fig. '5 may be considered as being divided by-th'e mouth just described, into the two halves 8 and 10 which, when the assembly is folded back upon itself as in Fig. 1 to bring the two longitudinal edges of the flat assembly together, lie side by side, thus giving double the filtering capacity that is provided by the ordinary bag assembly of the same dimensions. 7

It is to be noted particularly that the mouth of the outer bag is'concealed between the halves 8, 10 of assembly when the latter is in the folded position shown in Fig. 1, and the pressure which is built up within the paper bag by the discharge from the'cleaner willv aid in securing the mouth closed.

The opposite side edges 11 and 12 of the outer bag are reinforced by suitable reinforc-, ing strips 13, as shown in Fig. 1. Associated with the reinforced edges 11 and 12 of the outer bag 1 are suitable posts 13 and latches 14, adapted to removably secure these edges and maintain the bag in a folded condition. The reinforced edge 12 of the outerbag 1 has associated therewith bails 15 adapted to removably secure the folded bag to the handle of the cleaner.

lVhen the bag has been folded and its contiguous edges 11 and 12 secured by means of the saidposts and latches 13 and- 14, respectively, and the tube 3 has been connected to the complementary suction tube of the cleaner, the corner 16 of the outer bagl is held in position by means of flexible elements 17, lying between the tube 3 and the handle 18 of the cleaner, as shown in Fig. 7. Said flexible element 17 hasan enlarged end 19, which isforced into a compressed position as the discharge pipe to which the tube 2 is'de signed to connect,,and that the enlargement on the end of the flexible element 17 may be wedged between said handle and the tube 3, thereby supporting the corner of the bag assembly.

It will thus be seen that I have provided an air filtering and dust collecting unit consisting of an inner paper bag and an outer protecting cloth bag, which has the advantages in that it is capable of being folded and thus folded properly attached to the cleaner. In providing a bag of this type the amount of filtering surface available is materially increased andthe efficiency of the cleaner correspondingly enhanced. e

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the means herein disclosed, provided those stated by any of the following claims or their equivalent be employed.

I therefore particularly point out and distinctly claim as my invention 1. In an air filtering and dust collecting unit for use in connection with a vacuum cleaner an outer bag having a tube and a longitudinal mouth, an inner filter bag suitable for being passed throughsaid mouth and including a neck for association with said tube and means for foldably securing said bags to the handle of such cleaner, said means consisting of a plurality of rapidly securable fasteners associated with the contiguous edges of said folded outer bag, a metallic reinforcing member inserted into one of said contiguous edges, and a forked metallic element attached to a corner of said outer bag and adapted to be secured between said cleaner handle and said connecting tube.

2. For use in connection with a vacuum cleaner, a dust collecting unit comprising an outer bag in the form of a double-walled envelope when spread out flatly, but folded back upon itself when in use to form two halves lying side by side, a reinforcing element in one longitudinal edge of the bag, fasteners secured thereto, coacting devices secured to the opposite edge of the bag and at tachable to said fasteners, loop hangers secured to the reinforcing element, and an inner bag contained within the outer bag and folded therewith, the outer bag having a mouth formed in one of its walls and positioned between the folded halves of the bag assembly when in use, whereby the pressure of air within the inner bag will serve to close the mouth of the outer bag.

3. A vacuum cleaner dust collecting unit including an outer bag having two opposed edges which are positioned together when the bag is in working position, a reinforcing element secured to one of said edges, fasteners secured to said reinforcing element, coacting fasteners secured to the opposing bag edge, and loop hangers secured to said element for suspending the bag from a cleaner.

4. A vacuum cleaner dust collecting unit comprising an outer bag including an outer wall portion and two inner wall portions attached to opposite longitudinal edges of said outer wall portions and extending together to form between their adjacent edges, a mouth for the reception of an inner bag, an inner bag received between said outer and inner walls of the outer bag, the outer and inner bags being together folded back upon themselves to bring said opposite longitudinal edges together and to position said mouth between the side byside bag portions thus formed, where pressure of air within the inner bag will tend to close said mouth, and means for securing said opposite edges together, comprising a reinforcing element secured to one of said longitudinal edges, fasteners secured to said reinforcing element, coacting fasteners on the other of said longitudinal edges, and loop hangers secured to said reinforcing element.

5. A vacuum cleaner dust collecting unit comprising an outer bag having a tube at one corner and folded back upon itself when in working position, said tube being attachable to a cleaner having a discharge pipe to coact with the tube and having a handle positioned in closely spaced relation to said pipe, and a flexible element secured to the corner of said bag opposite said tube, receivable between said handle and tube, and provided with an enlarged end adapted to wedge itself between said handle and tube.

6. A vacuum cleaner dust collecting unit comprising an outer bag having a tube at one corner and folded back upon itself when in working position, said tube being attachable to a cleaner having a discharge pipe to coact with the tube and having a handle positioned in closely spaced relation to said pipe, and an enlargement on the corner of said bag opposite said tube, receivable between said handle and tube, and adapted to wedge itself between said handle and tube.

Signed by me, this 7th day of Oct.. 1929. 1

FREDERICK RIEBEL, JR. 

